Improvement in casting chilled rolls



a. a. LUBDELL'.

Casting Chilled Rolls. No. 139,798. Patentedlune10Q1873;

UNITED STATEs PATENT OFFICE.

A GEORGE e. LOBDELL, or WILMINGTON, DELAWARE, AssIGNoE T0 HIMSELF ANDWILLIAM STUART, OF SAME PLACE.

IMPROVEMENT IN CASTING CHILLE D ROL LS.

specification forming part of Letters Patent No. 1 39,798, dated J mm10, 1873 application filed January 21, 1873.

Improvement in (lasting Chilled Rolls, of

which the following is a specification The object of my invention is toprevent the breaking of the necks of chilled rolls during the process ofcasting the same, and to readily adjust the mold so as to cast rolls ofdifl'erent lengths. This object I attain by a sleeve, D, lined with sandor loam b, and adapted to' the interior of the chill A, substantially asshown in the vertical section, Fig. 1, so that it can be adjustedvertically in the chill, and can yield and accommodate itself to theshrinkage of themetal poured into the mold.

A is the upper .portion of the chill, in which the body of the roll iscast, and on the top of this chill is placed a box, B. D is a metalsleeve or cylinder, shown'detached in Fig. 2, the upper portion of whichis contained in the box B, and the 10We1 portion in the chill, in whichit can slide freely. The. inside of this sleeve is lined with sand, orits equivalent,

molded to the desired shape of the neck b of the roll.

When this sand lining has been properly dried it is placed with thesleeve D in the chill in the position which the length of the roll to becast requires, the upper portion of the sleeve being contained within abody of runners into the lower end of the mold, rises 7 roll, therebypreventing the separation of the same at the neck,which is liable tooccur when the upper neck adheres to a fixed portion of the mold.

I prefer to perforate the sleeve, and, also, the box B with small holes,as shown, so as to permit the free escape. of gases generated by.

the molten metal, these vents insuring the soundness of the neck of theroll.

One of the most important advantages of my invention is the facilitywhich the sleeve afl'o'rds for making rolls of different lengths, thelength of the roll being determined by the simple adjustment of thesleeve in the chill.

I claim as my invention- 1. The sand-lined sleeve D, applied to the moldso as to be movable and adjustable there- I in, as set forth. 2. Thesand-lined sleeve, suspended in the chill by rods m m, or theirequivalent, as spec- 3. The combination. of the perforated sleeve D withthe perforated box B and its prepared lining.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GEORGE G. LOBDELL. Witnesses:

JAMES H. CAMERON,

JOHN HARE.

